Radeon mobility HD3450 (RV620) heavy screen flickering after trying to upgrade kernel 4.15.0-54

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apport-collect 1861554

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

please tell me what other docs I can provide.
I tried to generate an apport log but my distro uses systemd-coredump and I don't know how to generate a log. I tried to install apport removing coredump but does not complete the log generation.

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1861554

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

Finally I was able to generate an apport file, here it is:

Please test latest mainline kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6-rc1/

Same issue as reported in the Bug, with some diffs:
Laptop Asus x50sl with graphic card AMD rv620 / Mobility Radeon HD3450. [SAME]
Distro: Linux Mint 19.3 MATE 64bit; base: Ubuntu 18.04 bionic.[UPDATE]
This happen trying any distro. I tried Ubuntu 18.04.3, ElementaryOS.
--
I'm also stuck with Kernel 4.15.0-76 (as beeing LTS) and 5.3.0-28 (limited to Aug.2020 support).
--
Ask for backport of bug-fix to Kernel 4.15.0 or other LTS Kernel.

@kaihengfeng. I just tried the latest 5.6.0-050600rc1_but the problem is still there.

Hi!
Confirm that problem rise with kernel 4.15.0.55 (is LTS, supported till
2022).
Locked kernel update to 4.15.0 54 for now, which is enough for normal use.

---------------------------------------
Diego Maniacco, Bolzano (Italy)
<email address hidden>
---------------------------------------

[image: Not f'd — you won't find me on Facebook] <https://www.fsf.org/fb>
Not f'd — you won't find me on Facebook

On Wed, 12 Feb 2020 at 16:50, dueller <email address hidden> wrote:

> @kaihengfeng. I just tried the latest 5.6.0-050600rc1_but the problem is
> still there.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1861554
>
> Title:
> Radeon mobility HD3450 (RV620) heavy screen flickering after trying to
> upgrade kernel 4.15.0-54
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> laptop Asus x50sl with graphic card AMD rv620 / Mobility Radeon HD3450.
> Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic.
> This happen trying any distro. I tried Ubuntu, Manjaro, Debian, Deepin,
> MX and so on.
> I'm stuck with Kernel 4.15.0-54 and 5.0.0-20 (and the contemporary 5.3
> kernel). I cannot upgrade to newer kernels.
> Seems that the fixes for bug #1791312 broke my kind of card.
>
> here is a video:
> https://youtu.be/9Rez7s0V6iA
>
> here is another user with same problem:
> https://forums.linuxmint.com/viewtopic.php?p=1702005#p1702005
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861554/+subscriptions
>

Update:
checked all 4.15 kernel versions.
any version > 4.15.0-54 (LTS 2020) shows the bug.
kernel 5.3 is not supported after Aug.2020).
--
Again Ask for backport of bug-fix to Kernel 4.15.0 or other LTS Kernel.

Please file an upstream bug at https://bugs.freedesktop.org/
Product: DRI
Component: DRM/Radeon

hoi: got "freedesktop.org Bugzilla is no longer in use".

---------------------------------------
Diego Maniacco, Bolzano (Italy)
<email address hidden>
---------------------------------------

[image: Not f'd — you won't find me on Facebook] <https://www.fsf.org/fb>
Not f'd — you won't find me on Facebook

On Thu, 13 Feb 2020 at 10:56, Kai-Heng Feng <email address hidden>
wrote:

> Please file an upstream bug at https://bugs.freedesktop.org/
> Product: DRI
> Component: DRM/Radeon
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1861554
>
> Title:
> Radeon mobility HD3450 (RV620) heavy screen flickering after trying to
> upgrade kernel 4.15.0-54
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> laptop Asus x50sl with graphic card AMD rv620 / Mobility Radeon HD3450.
> Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic.
> This happen trying any distro. I tried Ubuntu, Manjaro, Debian, Deepin,
> MX and so on.
> I'm stuck with Kernel 4.15.0-54 and 5.0.0-20 (and the contemporary 5.3
> kernel). I cannot upgrade to newer kernels.
> Seems that the fixes for bug #1791312 broke my kind of card.
>
> here is a video:
> https://youtu.be/9Rez7s0V6iA
>
> here is another user with same problem:
> https://forums.linuxmint.com/viewtopic.php?p=1702005#p1702005
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861554/+subscriptions
>

You are right, please file an upstream bug at
https://gitlab.freedesktop.org/drm/amd/issues

Done
Issue is here:
https://gitlab.freedesktop.org/drm/amd/issues/1045

After a lot of cpu time and some difficulties I built the latest 5.3.0-40 kernel reverting the 2e26ccb119bde03584be53406bbd22e711b0d6e6 commit created for bug #1791312. With the new (but old) module my machine now works flawlessly.
I think the above commit should be improved/changed.
Please help...

Tnks!
Any solution should be backported to kernel v. 4.15 LTS to be effective.
diego
---------------------------------------
Diego Maniacco, Bolzano (Italy)
<email address hidden>
---------------------------------------

[image: Not f'd — you won't find me on Facebook] <https://www.fsf.org/fb>
Not f'd — you won't find me on Facebook

On Tue, 18 Feb 2020 at 19:50, dueller <email address hidden> wrote:

> ** Attachment added: "Istantanea_2020-02-18_19-42-37.png"
>
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861554/+attachment/5329345/+files/Istantanea_2020-02-18_19-42-37.png
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1861554
>
> Title:
> Radeon mobility HD3450 (RV620) heavy screen flickering after trying to
> upgrade kernel 4.15.0-54
>
> Status in linux package in Ubuntu:
> Confirmed
>
> Bug description:
> laptop Asus x50sl with graphic card AMD rv620 / Mobility Radeon HD3450.
> Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic.
> This happen trying any distro. I tried Ubuntu, Manjaro, Debian, Deepin,
> MX and so on.
> I'm stuck with Kernel 4.15.0-54 and 5.0.0-20 (and the contemporary 5.3
> kernel). I cannot upgrade to newer kernels.
> Seems that the fixes for bug #1791312 broke my kind of card.
>
> here is a video:
> https://youtu.be/9Rez7s0V6iA
>
> here is another user with same problem:
> https://forums.linuxmint.com/viewtopic.php?p=1702005#p1702005
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861554/+subscriptions
>

Hello!
A proposal:
make the fix for bug #1791312 depend on either the card-version or (more flexible) a kernel-option for the radeon-driver.
As told, the fix works well for "AMD/ATI] RV530/M56-P controller"

Hello Werner, could you please join the issue at https://gitlab.freedesktop.org/drm/amd/issues/1045 and make the same proposal (specifying that you are the owner of bug #1791312.

Thank you very much!

Hi, is there anything I can do to help with this?

I have the exact same built-in graphics on my laptop and have the exact same issue so have been stuck with kernel 4.15.0-54 for a while now.

The latest Ubuntu LTS 20.04 and 18.04.4 all come pre-installed with a more recent kernel that cause graphical corruption on my machine.

Thanks

Please help for this bug.
Thank you

Hi, has any progress been made in reversing/fixing the change that caused this bug? Thanks

Please test this kernel:
https://people.canonical.com/~khfeng/lp1861554/

Fantastic Kai-Heng Feng!
Flickering is gone!

@kaihengfeng

could you commit a patch?

@kaihengfeng

Yep, that works beautifully on Ubuntu 16.04.6 LTS. Thanks.

Any idea if/when we would be looking at getting this committed into the kernel proper and back ported to all the current supported distros?

Let me know if you need any further help testing. I'm limited in the hardware I have available but will help wherever I can so I can officially use the latest and greatest kernel.

Please test this one:
https://people.canonical.com/~khfeng/lp1861554-2/

lp1861554-2 works!

no flickering at all!

https://lkml.org/lkml/2020/8/25/934

Hi, sorry for the delayed response (Any notifications on launchpad go straight to junk no matter how many times i add the email to the safe list).

I am happy to say this latest fix also works fine on my Ubuntu 16 laptop.

Thanks.

I see there are problems with this patch.
Any chance to solve this bug?

Not much chance unless AMD GFX folks spend sometime to fix this old bug...

Probably a stupid question, where can you see there are problems with the patch? I'm assuming I am not looking in the correct area??? Thanks

Hi,
I have the same problem on ATI mobility Radeon HD 3650 (RV635) installed on laptop Compal FL90. Card worked corretly on old Linux releases, but recently all different distributions I try have corrupted screen image. Problem exist only on internal laptop LCD. External LCD connected to VGA port works without problems.
Last kernel which works for me is 4.15.0-54-generic. Starting from 4.15.0-55-generic I have corrupted screen.
Please see some more details here:
https://forums.linuxmint.com/viewtopic.php?f=59&t=346544&p=1999384
Is it possible to have this solved on newer kernel releases ?

BR

This bug seems to be forgotten.
What a pity

I have the same issue. kaihengfeng solution works but i would like to use another distros

Yep, real shame this bug was forgotten. :(

It just needs some love from AMD.

I have the same issue on a Dell Studio 15 with Intel Core 2 Duo T8300 and ATI Mobility Radeon HD 3450.
Tired of Win7 I tried last weekend to install various linux distros without success.
A friend of mine, after reading this #1861554 bug gave me a pendrive with Ubuntu distro 16.04.1 (LTS) with kernel 4.15.0-54-generic and it worked flawlessly.
All releases and distros after that date are useless on my laptop.

Old algorithm which were included up to kernel 4.15.0-54-generic seems to work no problems for long time until there has been reported problem with Radeon X1600 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312
It seems that when algorithm has been changed it broke image for multiple different card types which were working before.
If it is not possible to create solution which would work correctly on all cards there should be at least added some parameter for graphics configuration which would allow to switch between old and new settings manually.
Something like:
 TearFree: auto
  supported: off, on, auto

I would suggest to add 3 modes which would choose between auto, old algorithm and new algorithm.
In auto mode it would select new algorithm for Radeon X1600 and old for other cards. At least it is confirmed that old should be used with HD3450 and HD3650. In any case if auto would work incorrectly user could easily switch manually.

This is really problematic for laptops since you can't just simply replace card with another cheap card which has better linux support. Many older laptops which are running older Windows releases could be switched to Linux instead of Windows 10. Currently it does not work correctly on any recent linux distros.

Adding a new module parameter to select different algorithms shouldn't be too hard, anyone up to the task?